| 摘要 |
PURPOSE: A multi-layered piezoelectric transformer is provided to be capable of outputting high current and power even in a low load resistance by forming an output part into a multi-layered shape to lower output impedance. CONSTITUTION: The piezoelectric transformer is rectangular or circular shape. An output part(202) having a plurality of internal electrodes and piezoelectric layers is formed on outline of the piezoelectric transformer, and an input part(201) is integrally formed in the center of the output part(202). The respective piezoelectric layers adjacent to each other are polarized into opposite directions from each other and thickness directions. In addition, the respective piezoelectric layers are connected in parallel to each other through an external electrode(208). An input electrode(205) and an output electrode(206) are respectively formed on the surfaces of the input part(201) and output part(202).
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